package websocket;/*

 */

import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.http.websocketx.TextWebSocketFrame;

import java.time.LocalDate;

/**
 * @ClassName MyServerHandler
 * @Author Final
 * @Project DataStructures
 */
public class MyServerHandler extends SimpleChannelInboundHandler<TextWebSocketFrame> {
    //这里表示一个文本帧
    @Override
    protected void channelRead0(ChannelHandlerContext ctx, TextWebSocketFrame msg) throws Exception {
        System.out.println("服务端收到消息"+msg.text());

        //回复消息
        ctx.channel().writeAndFlush(new TextWebSocketFrame("服务器时间" +  LocalDate.now()+ msg.text()));
    }


    //当web客户端连接后，触发方法
    @Override
    public void handlerAdded(ChannelHandlerContext ctx) throws Exception {

        /**
         * LongText唯一
         * ShortText不唯一
         */
        System.out.println("handleradded"+ ctx.channel().id().asLongText());
        System.out.println("handleradded"+ ctx.channel().id().asShortText());
    }

    @Override
    public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {

        System.out.println("handlerRemoved被调用"+ctx.channel().id().asLongText());
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {

        System.out.println("异常发生"+cause.getMessage());
        ctx.close();
    }
}
